20790721336

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1985363}}^1$

素因数の和:1985404

約数の個数: 64

約数和(自身を含む): 51460634880

約数和(自身を除く): 30669913544

約数列:

[1, 2, 4, 7, 8, 11, 14, 17, 22, 28, 34, 44, 56, 68, 77, 88, 119, 136, 154, 187, 238, 308, 374, 476, 616, 748, 952, 1309, 1496, 2618, 5236, 10472, 1985363, 3970726, 7941452, 13897541, 15882904, 21838993, 27795082, 33751171, 43677986, 55590164, 67502342, 87355972, 111180328, 135004684, 152872951, 174711944, 236258197, 270009368, 305745902, 371262881, 472516394, 611491804, 742525762, 945032788, 1222983608, 1485051524, 1890065576, 2598840167, 2970103048, 5197680334, 10395360668, 20790721336]

約数ペア:

[(1, 20790721336), (2, 10395360668), (4, 5197680334), (7, 2970103048), (8, 2598840167), (11, 1890065576), (14, 1485051524), (17, 1222983608), (22, 945032788), (28, 742525762), (34, 611491804), (44, 472516394), (56, 371262881), (68, 305745902), (77, 270009368), (88, 236258197), (119, 174711944), (136, 152872951), (154, 135004684), (187, 111180328), (238, 87355972), (308, 67502342), (374, 55590164), (476, 43677986), (616, 33751171), (748, 27795082), (952, 21838993), (1309, 15882904), (1496, 13897541), (2618, 7941452), (5236, 3970726), (10472, 1985363)]